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TECHNICAL PAPERS: Gas Turbines: Heat Transfer and Turbomachinery

Flow and Heat Transfer in an Industrial Rotor-Stator Rim Sealing Cavity

[+] Author and Article Information
A. V. Mirzamoghadam, Z. Xiao

Advanced Engine Development, Siemens Westinghouse Power Corporation, 4400 Alafaya Trail, MC-205, Orlando, FL 32826

J. Eng. Gas Turbines Power 124(1), 125-132 (Feb 01, 2000) (8 pages) doi:10.1115/1.1400754 History: Received November 01, 1999; Revised February 01, 2000
Copyright © 2002 by ASME
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References

Roy, R. P., Devasenathipathy, S., Xu, G., and Zhao, Y., 1999, “A Study of the Flow Field in a Model Rotor-Stator Disk Cavity,” ASME Paper No. 99-GT-246.
Vaughan, C., 1986, “A Numerical Investigation into the Effect of an External Flow Field on the Sealing of a Rotor-Stator Cavity,” Ph.D. thesis, University of Sussex.
Phadke,  U. P., and Owen,  J. M., 1988, “Aerodynamic Aspects of the Sealing of Gas Turbine Rotor-Stator Systems, Part 3: The Effect of Nonaxisymmetric External Flow on Seal Performance,” Int. J. Heat Fluid Flow, 9, No. 2, pp. 113–117.
Ko,  S. H., and Rhode,  D. L., 1992, “Thermal Details in a Rotor-Stator Cavity at Engine Conditions With a Mainstream,” ASME J. Turbomach., 111, pp. 333–340.
Chew, J. W., Green, T., and Turner, A. B., 1994, “Rim Sealing of Rotor-Stator Wheelspaces in the Presence of External Flow,” ASME Paper No. 94-GT-126.
Green,  T., and Turner,  A. B., 1994, “Ingestion into the Upstream Wheelspace of an Axial Turbine Stage,” ASME J. Turbomach., 116, pp. 327–332.
Bohn, D., Johann, E., and Krüger, U., 1995, “Experimental and Numerical Investigations of Hot Gas Ingestion in Rotor-Stator Systems With Superimposed Cooling Mass Flow,” ASME Paper No. 95-GT-143.
Bohn, D., Rudzinski, B., and Suerken, N., 1999, “Influence of Rim Seal Geometry on Hot Gas Ingestion into the Upstream Cavity of an Axial Turbine Stage,” ASME Paper No. 99-GT-248.
Reichert, A. W., and Lieser, D., 1999, “Efficiency of Air-Purged Rotor-Stator Seals in Combustion Turbine Engines,” ASME Paper No. 99-GT-250.
Owen, J. M., and Rogers, R. H., 1989, Flow and Heat Transfer in Rotating Disk Systems. Vol. I: Rotor-Stator Systems, Research Studies Press, Taunton, UK.
Chen,  J. X., Gam,  X., and Owen,  J. M., 1996, “Heat Transfer in an Air-Cooled Rotor-Stator System,” ASME J. Turbomach., 118, pp. 444–451.
Roy, R. P., Agarwal, V., Devasenathipathy, S., He, J., Kim, Y. W., and Howe, J., 1997, “A Study of the Flow Field and Convective Heat Transfer in a Model Rotor-Stator Cavity,” Experimental Methods in Heat Transfer, HTD-Vol. 353, ASME, New York, pp. 97–107.
Mirzamoghadam, A. V., 1996, “Investigation of the Flow and Heat Transfer in a Low Pressure Turbine Interdisc Cavity with Skewed Radial Jet-Flow,” ASME Paper No. 96-GT-308.
Zimmermann, H., and Wolff, K. H., 1998, “Air System Correlations, Part 1: Labyrinth Seals,” ASME Paper No. 98-GT-206.
Dorfman, L. A., 1963, Hydrodynamic Resistance and Heat Loss of Rotating Solids, Oliver and Boyd, London.

Figures

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Rim seal cavity geometry
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CFD model geometry and grid
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Lab seal wall temperature distribution
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Rotor-stator wall temperature distribution
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Temperature rise in the labyrinth seal
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Temperature rise in the rotor-stator rim-seal cavity
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Mean swirl velocity ratio in the cavity
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Pressure drop in the labyrinth seal
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Mean static pressure distribution in the cavity
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Cavity/lab seal streamlines (showing outflow along rotor and inflow along stator)
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Rotor boundary layer thickness
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Nondimensional disk-wall heat flux profile
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Mass-flow parameter in the rim-seal cavity
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Increased cooling flow showing total outflow in lower subcavity

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